#include <bits/stdc++.h>
using namespace std;
int main() {
char a, vowel1 = ';', vowel2 = ';', vowel3 = ';', vowel4 = ';';
int ans = 0;
while(cin >> a){
if(a != '.'){
vowel1 = vowel2;
vowel2 = vowel3;
vowel3 = a;
}
cout << vowel1 << " " << vowel2 << " " << vowel3 << endl;
if(a = '.'){
vowel1 = ';';
vowel2 = ';';
vowel3 = ';';
}
if (vowel1 == ';' || vowel2 == ';'){
continue;
}
// if (vowel1 == vowel2 && vowel2 == vowel3){
// ans++;
// if(vowel2 == 1){
// vowel2 = 0;
// }
// else{
// vowel2 = 1;
// }
// }
//}
//cout << '\n';
//cout << ans;
}
return 0;
}
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